CBR 600F4 1999 - 2000 Honda CBR 600F4 Forum

Missfire

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Old 07-16-2012, 04:52 AM
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Yo peeps starting to feel like a reguler at the mo with my probs lol geting a slight missfire wen im pulling away in 1st and abit bluttery in second got no issue with accelaration tho only 200 mile ago had new plugs ngk iridiums could i have a carb problem??opinions appreciated
2000 reg f4
 
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Old 07-16-2012, 03:39 PM
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Seems to be hunting when iddling slightly aswell ive turned my idle up to around 1400 rpm and seems to run pretty sweet would it harm to run a carb cleaner through the fuel???
 
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Old 07-16-2012, 03:46 PM
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Originally Posted by Ashspike
Seems to be hunting when iddling slightly aswell ive turned my idle up to around 1400 rpm and seems to run pretty sweet would it harm to run a carb cleaner through the fuel???
Sea Foam? Go for it.
 
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Old 07-16-2012, 09:44 PM
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have you done anything with the exhaust in the recent past? replace muffler or modify muffler? i know when i chopped my last muffler down into a shorty, i lost some power, and it acted up like that every so often. otherwise, if it was apart recently, id also maybe check to make sure you dont have any air leaks in your intake anywhere.
 
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Old 07-17-2012, 01:26 AM
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Well had the tank off yesterday and checked all the pipe work and cant seem to find anything it has a short stubby exhaust fitted to it which the previous owner had put on.i have a baffel for it that bolts in and reduces the hole at the back quite alot maby worth putting that in and see if makes a difference
 
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Old 07-17-2012, 04:08 PM
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well if the carbs were never tuned or jetted after that shorty was added, that could possibly do it.
 
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